Share Based Compensation - Restricted Stock Unit Awards (Details) - Restricted stock unit awards - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Number of Shares [Roll Forward]
Number of Shares, Beginning Balance (in shares)	9,401	7,882	5,187
Number of Shares, Granted (in shares)	5,882	5,525	5,883
Number of Shares, Vested and released (in shares)	(4,131)	(3,314)	(2,268)
Number of Shares, Forfeited (in shares)	(889)	(692)	(920)
Number of Shares, Ending balance (in shares)	10,263	9,401	7,882
Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant Date Fair Value, Beginning Balance (in dollars per share)	$ 20.17	$ 23.66	$ 37.01
Weighted Average Grant Date Fair Value, Granted (in dollars per share)	15.93	18.34	22.07
Weighted Average Grant Date Fair Value, Vested and released (in dollars per share)	21.04	25.58	39.46
Weighted Average Grant Date Fair Value, Forfeited (in dollars per share)	18.04	18.78	29.78
Weighted Average Grant Date Fair Value, Ending balance (in dollars per share)	$ 17.51	$ 20.17	$ 23.66
Unrecognized compensation cost	$ 99
Recognition period	1 year
Total fair value of stock-settled during the year	$ 70	$ 62	$ 51
American Airlines, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Number of Shares [Roll Forward]
Number of Shares, Beginning Balance (in shares)	9,401	7,882	5,187
Number of Shares, Granted (in shares)	5,882	5,525	5,883
Number of Shares, Vested and released (in shares)	(4,131)	(3,314)	(2,268)
Number of Shares, Forfeited (in shares)	(889)	(692)	(920)
Number of Shares, Ending balance (in shares)	10,263	9,401	7,882
Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant Date Fair Value, Beginning Balance (in dollars per share)	$ 20.17	$ 23.66	$ 37.01
Weighted Average Grant Date Fair Value, Granted (in dollars per share)	15.93	18.34	22.07
Weighted Average Grant Date Fair Value, Vested and released (in dollars per share)	21.04	25.58	39.46
Weighted Average Grant Date Fair Value, Forfeited (in dollars per share)	18.04	18.78	29.78
Weighted Average Grant Date Fair Value, Ending balance (in dollars per share)	$ 17.51	$ 20.17	$ 23.66
Unrecognized compensation cost	$ 93
Recognition period	1 year
Total fair value of stock-settled during the year	$ 70	$ 62	$ 51

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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